4
$\begingroup$

I have associations look like this:

data = {<|a -> {2, l1}, b -> {3, l1}|>, <|a -> {3, l2}, b -> {2, l2}|>}

I want the result:

<|a -> {3, l2}, b -> {3, l1}|>

The bigger digit of first value should be left.

$\endgroup$
4
$\begingroup$
Merge[data, First @* MaximalBy[First]]
<|a -> {3, l2}, b -> {3, l1}|>
$\endgroup$
1
  • $\begingroup$ I think too much about Union. $\endgroup$
    – erow
    Jun 14 '17 at 8:57

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.